A sample of oxygen gas occupies 23.4 L at 298 K and 86.5 kPa. This sample contains how many moles of oxygen?

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

Sugar is dissolved in water. which is the solute? sugar neither both water

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood